Study on High Speed Schlieren Measurement Method for Laser induced LSD Wave Evolvement

Abstract The application of High-speed schlieren technology in flow field evolvement diagnosis of laser induced LSD wave is presented. Schlieren technology is improved to investigate the fast and self-luminescent flow field evolvement. Nanosecond magnitude and suitable light exposure could be obtained at the same time. The time sequence is designed and the time interval between high speed camera, strobo and laser is controlled. The clear flow field evolvement picture is appropriately processed to get the position and velocity information. The results show that the focusing angle and the inducer exert great influence on the evolvement of LSD wave. This work could provide the reference and convenient condition for the next research.